Question

Find the value of x; 3^x + 3^(x+2) +3^(x+3) =108 (Hint: Take common of 3x, then equate exponents)
This is the question for class 8 maths chapter exponent and radicals​​

Answer 1

Answer:

Step-by-step explanation:

Using formula  

x→a

lim

​  

 

x−a

x  

n

−a  

n

 

​  

=n.a  

n−1

 

x→3

lim

​  

 

x−3

x  

n

−3  

n

 

​  

=n.3  

4−1

=4.3  

3

 

n=4